Q 12-01-014NEETJEE MainEasy
A charge $q$ is placed at the centre of a cube. The electric flux through one face of the cube is
Answer: (B) $\dfrac{q}{6\epsilon_0}$
Concept. Gauss's law gives total flux $\dfrac{q}{\epsilon_0}$; by symmetry it is shared equally by the six faces.
Step 1. One face. $\dfrac{q}{6\epsilon_0}$.
Answer. $\dfrac{q}{6\epsilon_0}$ (Option B).
Solution by Sreeraj P, M.Sc Physics